Recall: what you know
All topics
• 1) What is pollination?
• 2) Draw a flower and label the parts.
• 3) What is dispersal?
• 4) Name the products of photosynthesis?
• 5) Describe the structure of a xylem vessel.
• 6) Explain diffusion.
• 7) what is meant by solubility?
• 8) Write the definition of a compound and give an example.
• 9) Name 3 ways that tell us a chemical reaction has happened.
• 10) Write down the equation to calculate speed.
• 11) Write down the equation to calculate pressure.
• 12) Write down the equation to calculate density.
• 13) Write down the equation to calculate moments.
• 14) What is natural selection?
• 15) Give two modern examples of natural selection.
• 16) Name 3 gases that contribute to global warming.
• 17) What is greenhouse effect?
• 18) Name 3 habitats that contain the most species.
• 19) What is acidification?
• 20) What happens when fertilizer runs off into lakes?
• 21) What does hyphae do?
• 22) Name 2 decomposers.
• 23) Name 2 adaptations that cacti have to living in the desert.
• 24) What is inheritance?
• 25) Name 2 features that are passed on by genes and 2 features caused
by the environment
• 26) What is selective breeding and give an example.
• 27) What was Rutherford’s experiment?
• 28) How do you calculate the number of neutrons?
• 29) Draw the electronic structure of chlorine and write its electron
arrangement.
• 30) What is an oxidation reaction?
• 31) Give an example of an endothermic process.
• 32) Explain how temperature affects the rate of reaction.
• 33) How could surface area increase the rate of reaction? Draw to a
cube to show this.
• 34) What is meant by activation energy?
• 35) What is amplitude?
• 36) Draw high frequency wave?
• 37) What gas is formed when acid is added to a metal?
• 38) What happens to the current in a parallel circuit?
• 39) Draw a parallel circuit with an ammeter, cell, 2 bulbs and a voltmeter.
• 40) What is the job of enzymes?
• 41) Why do we need protein in our diet?
• 42) Give two examples of a deficiency disease?
• 43) What happens if you eat too much fat?
• 44) Where in the digestive system does absorption of nutrients into the
blood stream happen?
• 45) What is the job of the valves?
• 46) Which side of the heart is thicker?
• 47) What is oxyhaemoglobin?
• 48) What are antibodies?
• 49) Describe the structure of arteries, veins and capillaries.
• 50) What two ways is the red blood cell adapted to its function?
• 51) Why do we have thousands of alveoli, why not only a couple of
hundred?
• 52) What is the definition of aerobic respiration?
• 53) What is in cigarette smoke?
• 54) Why is carbon monoxide harmful?
• 55) What is an electromagnet?
• 56) Name 2 ways to make an electromagnet stronger?
• 57) Name 3 ways heat is transferred?
• 58) How do we see a red coloured postbox?
• 59) If you had a magenta filter which colours would be transmitted?
• 60) Explain refraction.
• 61) What is meant by dispersion?
• 62) Name the colours in order?
• 63) What is translucent?
• 64) What causes iron to rust?
• 65) How can iron be protected from rusting?
• 66) What does the law of conservation tell us?
• 67) What is the test for carbon dioxide, hydrogen and oxygen?
• 68) Name one physical change and one chemical change?
• 69) What happens to the solubility of solutes as the temperature
increases?
• 70) Explain how a condenser works.
• 71) What is an alloy?
• 72) Give an example of an alloy.
• 73) What is the difference between compounds and mixtures?
• 74) Name the first 20 elements of the periodic table.
• 75) Name 3 properties of metals.
• 76) Draw solid, liquid and gas diagram.
• 77) What is meant by adolescence?
• 78) Name one change in both boys and girls that is visible after
puberty.
• 79) What is a drug?
• 80) Name the drug found in tea and coffee.
• 81) What are the effects of nicotine?
• 82) what is menstruation?
• 83) What is meant by placenta?
• 84) What is ovulation?
• 85) What is the job of the seminal vesicle and prostate gland?
• 86) How many chromosomes are carried by each sperm cell?
• 87) What is the function of the roots?
• 88) How would you investigate the rate of photosynthesis?
• 89) What is the difference between a concentrated and dilute
solution?
• 90) What is enamel?
• 91) Why is fibre useful?
• 92) In experiments, what is meant by the independent variable?
• 93) What is a control variable?
• 94) What is a gamete?
• 95) What causes anaemia?
• 96) What is the test for reducing sugars?
• 97) How would I test for the presence of starch?
• 98) What is chromatography?
• 99) Give an example of a displacement reaction.
• 100) What is meant by the term inert?
• 101) What is static electricity?
• 102) What is meant by the term species?
• 103) What is a pooter?
• 104) What is a variable resistor?
• 105) What is infra-red radiation?
• 106) what type of surface are good and bad radiators of heat?
If you carried out an experiment with marble chips and
hydrochloric acid, using the same size and mass of
marble chips, the same temperature but different
concentrations of acid, what would you expect to
happen?
• At lower concentrations of acid the time taken for the gas to
be produced will be slower compared to higher
concentrations of acid. The reason for this is a more
concentrated acid will have more particles of hydrochloric
acid in a given amount of space. This means that there will
be more frequent collisions between hydrochloric acid
particles and calcium carbonate particles.